<!DOCTYPE html>
<html>
<head>
	<title></title>
</head>
<body>

<script type="text/javascript">

function Fun(){
	//this.run = '1'
}	
//Fun.prototype.run = '2'

var obj = new Fun();
//obj.run = '3';
//obj.__proto__.run = '4'

Object.prototype.run = '5';

// console.log( Fun.prototype , obj.__proto__ )

console.log( obj.__proto__.__proto__.__proto__  );


</script>
</body>
</html>